this is a known problem with the current release version, it seems that the last emscripten is not compatible with the compiled libraries that come with 0.9.8 or earlier anymore. you can try using an older version of emscripten or using the OF nightly builds

Did you ever get emscipten to work?
I have it instaled according to the instructions, but cant’ even get the ‘emmake make’ command to run
( ‘command not found’) even though PATH is setup correctly via the shell script.

Fetch the latest registry of available tools.

./emsdk update

Download and install the latest SDK tools.

./emsdk install latest

Make the “latest” SDK “active”

./emsdk activate latest

or just this:

the installation will take a while. When it is finished, type source ./emsdk_env.sh to set the system path to the active version of Emscripten. You can copy the output of this command and add it to your .profile file, in order to save this variables also for the next sessions.

when I open another terminal window emmake didn’t worked neither. Only on the same terminal window I run this previous commands before. It seems related to the path where the emmake command is for the system.